In developing the policy, BPS staff researched best practices from cities around the U.S. and other countries. Staff interviewed experts who have studied and analyzed home energy disclosure policies. BPS consulted with a range of local stakeholders, including representatives from the real-estate industry, energy efficiency and home performance industry, energy efficiency advocates, equity organizations representing low-income homeowners, communities of color, tenants and advocates for homeownership and affordable housing, as well as with regular Portlanders.

After three City Council hearings and several amendments, Portland City Council voted unanimously to approve the home energy score ordinance on December 14, 2016.

Some of the history of the policy development process is captured below.